search for: smaalder

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2007 Jul 10
17
all open files
Hi All, Is there a simple way to list all currently open file descriptors ? TIA.. Regards, Venkat -- This message posted from opensolaris.org
2009 May 12
4
Controlling outbound bandwidth utilization by port
...olaris IPQoS appears quite complex to set up and the modem''s IPQoS features just crash the modem when configured. How can I use crossbow to limit the _outbound_ bandwidth utilization of port 80-sourced traffic? Do I need to place the Apache server in a zone? Thanks - - Bart -- Bart Smaalders Solaris Kernel Performance barts at cyber.eng.sun.com http://blogs.sun.com/barts "You will contribute more with mercurial than with thunderbird."
2007 Jun 20
14
Z-Raid performance with Random reads/writes
Given a 1.6TB ZFS Z-Raid consisting 6 disks: And a system that does an extreme amount of small /(<20K) /random reads /(more than twice as many reads as writes) / 1) What performance gains, if any does Z-Raid offer over other RAID or Large filesystem configurations? 2) What is any hindrance is Z-Raid to this configuration, given the complete randomness and size of these accesses? Would
2006 May 15
1
Sparse file support in Java?
Does anyone know if there is support in Java for creating holes in a sparse file (like one can do via fcntl(F_FREESP) in C)? Would like to avoid writing JNI code if there is already support for this somewhere in the JDK. Chuck
2007 Mar 12
9
X2200-M2
After the interesting revelations about the X2100 and it''s hot-swap abilities, what are the abilities of the X2200-M2''s disk subsystem, and is ZFS going to tickle any wierdness out of them? -brian -- "The reason I don''t use Gnome: every single other window manager I know of is very powerfully extensible, where you can switch actions to different mouse buttons.
2005 Nov 25
28
ZFS and memcntl(..., MC_SYNC, ...)
It wouldn''t be proper to start my first post here without congratulations and thanks to the ZFS team for such an impressive piece of work. Anyway, on to my query. I''ve been trying out ZFS, with a particular focus in reducing latency in a specific application. This application has a fair amount of random writing going on in the background (which, of course, ZFS will make
2007 Apr 09
5
CAD application not working with zfs
Hello, was use several cad applications and with one of those we have problems using zfs. OS and hardware is SunOS 5.10 Generic_118855-36, Fire X4200, the cad application is catia v4. There are several configuration and data files stored on the server and shared via nfs to solaris and aix clients. The application is crashing on the aix client except the server is sharing those files from a ufs
2007 Apr 16
0
[Fwd: Re: Getting the function names?]
Francois Dion wrote: > Le lundi 16 avril 2007 ? 13:28 -0600, Ali Bahrami a ??crit : >>> Subject: >>> Re: [dtrace-discuss] Getting the function names? >>> From: >>> Bart Smaalders <bart.smaalders at Sun.COM> >>> Date: >>> Fri, 13 Apr 2007 09:48:29 -0700 >>> To: >>> fdion at atriumwindows.com >>> >>> To: >>> fdion at atriumwindows.com >>> CC: >>> dtrace-discuss <dtrace-discuss at openso...
2007 Jan 19
18
Cheap ZFS homeserver.
So after toying around with some stuff a few months back I got bogged down and set this project aside for a while. Time to revisit. <BR><BR> Looking around there still is not a good "these cards/motherboards" work list. the HCL is hardly ever updated, and its far more geared towards business use than hobbyist/home use. So bearing all of that in mind I will need the
2006 May 19
3
Oracle on ZFS vs. UFS
Hi, I''m preparing a personal TPC-H benchmark. The goal is not to measure or optimize the database performance, but to compare ZFS to UFS in similar configurations. At the moment I''m preparing the tests at home. The test setup is as follows: . Solaris snv_37 . 2 x AMD Opteron 252 . 4 GB RAM . 2 x 80 GB ST380817AS . Oracle 10gR2 (small SGA (320m)) The disks also contain the OS
2008 Feb 26
1
Possible interest for ZFS encryption
Disk encryption easily defeated, research shows http://www.itpro.co.uk/storage/news/170304/disk-encryption-easily-defeated-research-shows.html Freezing RAM, whatever next? Ian
2006 Apr 13
0
ZFS Root instructions on Tabriz''s weblog
http://blogs.sun.com/roller/page/tabriz#are_you_ready_to_rumble I''ve been running this for a couple of months on my desktop, which hold my home directory, more than the corp. specified number of years of email, etc. Experimental but quite stable. - Bart -- Bart Smaalders Solaris Kernel Performance barts at cyber.eng.sun.com http://blogs.sun.com/barts
2007 Mar 05
2
Floating-Point Operator
Hi All: Why are floating-point operators not supported in D Language? Because they are useless in tracing programs? Regards! TJ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/dtrace-discuss/attachments/20070305/a0b4cf0e/attachment.html>
2008 Apr 18
1
lots of small, twisty files that all look the same
A customer has a zpool where their spectral analysis applications create a ton (millions?) of very small files that are typically 1858 bytes in length. They''re using ZFS because UFS consistently runs out of inodes. I''m assuming that ZFS aggregates these little files into recordsize (128K?) blobs for writes. This seems to go reasonably well amazingly enough. Reads are a
2007 Apr 19
5
Available free memory.
Hi, Can I use DTrace to determine memory status? 1.Total Physical Memory, Used Memory. 2.Total Swap Space and Used Swap Space. I did find few DTrace scripts but had too much in them and I am unable to chop off unwanted lines of code due to lack of knowledge. It will be very helpful if some one can share the piece of code that serves my purpose as mentioned above. Regards, Ramesh. Ramesh
2007 Mar 20
8
Is there any performance problem with hard links in ZFS?
Is there any performance problem with hard links in ZFS? I have a large storage. There will be near 50000 hard links for every file. Is it ok for ZFS? May be some problems with snapshots(every 30 minutes there will be a snapshot creating)? What about difference in speed while working with 50000 hardlinks or 50000 different files? ps: It would be very useful if you give me some links about
2007 Jun 14
44
Best use of 4 drives?
I''m putting together a NexentaOS (b65)-based server that has 4 500 GB drives on it. Currently it has two, set up as a ZFS mirror. I''m able to boot Nexenta from it, and it seems to work ok. But, as I''ve learned, the mirror is not properly redundant, and so I can''t just have a drive fail (when I pull one, the OS ends up hanging, and even if I replace it, I have to
2005 Nov 19
11
ZFS related panic!
> My current zfs setup lookst like this: > > homepool 3.63G 34.1G 8K /homepool > > homepool/db 61.6M 34.1G 8.50K /var/db > > homepool/db/pgsql 61.5M 34.1G 61.5M > > /var/db/pgsql > > homepool/home 3.57G 34.1G 10.0K /users > > homepool/home/carrie 8K 34.1G 8K > > /users/carrie > >
2007 Jan 11
4
Help understanding some benchmark results
G''day, all, So, I''ve decided to migrate my home server from Linux+swRAID+LVM to Solaris+ZFS, because it seems to hold much better promise for data integrity, which is my primary concern. However, naturally, I decided to do some benchmarks in the process, and I don''t understand why the results are what they are. I though I had a reasonable understanding of ZFS, but now
2007 Apr 11
69
ZFS and Linux
Hello, I believe that ZFS and it''s concepts is truly revolutionary to the point that I no longer see any OS as modern if it does not have comparable storage functionality. Therefore I think that file system/disk manager with similar qualities should be written for Linux. Does Sun have plans to dual license ZFS as GPL so it can be ported to native Linux? If not, is it legal to write